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Edition 2010A
Edition 2010A
10
10 Electrical
Electrical system
system
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The electrical system consists of:
The electrical system consists of:
•• a 4
a 48
8 V
Vol
olt b
t bat
atte
tery
ry
•• aan
n A
AT
TC
C
•• a d
a dri
riv
ve r
e reeg
gul
ulaato
torr
•• a p
a pum
ump
p re
reg
gul
ulaato
torr
•• a numbe
a number of sens
r of sensors, bo
ors, both micro
th microswitch
switch types (m
types (mecha
echanical
nical/mag
/magnetic) a
netic) and
nd
analogue-digital types.
analogue-digital types.
•• ind
induct
uctive
ive se
senso
nsors
rs for
for ste
steer
ering
ing
•• cont
contactor
actors fo
s for c
r conne
onnection
ction of
of the
the power
power circu
circuits
its
•• electr
electric mot
ic motors
ors for d
for drivin
riving the
g the gear
gearbox a
box and h
nd hydrau
ydraulic pu
lic pump
mp
•• el
elec
ectr
trom
omag
agne
neti
tic bra
c brake
ke
•• el
elec
ectr
tric
ic st
stee
eeri
ring
ng
•• eelleect
ctrriic
c ffan
anss
•• ele
electr
ctrica
ically o
lly oper
perate
ated hy
d hydra
drauli
ulic va
c valve
lve
Trucks equipped for use in cold storage facilities have
Trucks equipped for use in cold storage facilities have enclosed cabs including
enclosed cabs including
electric heating and lighting as
electric heating and lighting as optional equipment.
optional equipment.
Some trucks are equipped with
Some trucks are equipped with radio equipment.
radio equipment.
Other electrical installations may be
Other electrical installations may be encountered due to specific customer
encountered due to specific customer
requirements. These are not taken up in
requirements. These are not taken up in this Service Manual.
this Service Manual.
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1..2
2
S
Sa
affe
etty
y
0
0
•• Elect
Electric pow
ric powered veh
ered vehicles c
icles can be dan
an be dangero
gerous. All te
us. All testing
sting, trouble s
, trouble shooti
hooting an
ng and
d
calibration must be carried out
calibration must be carried out by authorised personnel. The drive wheel should
by authorised personnel. The drive wheel should
run free of the f
run free of the floor and be able to rotate freely
loor and be able to rotate freely during work.
during work.
•• T
Take off wa
ake off watche
tches, neck
s, necklaces
laces, brace
, bracelets and ri
lets and rings bef
ngs before starti
ore starting repa
ng repair and
ir and
troubleshooting work.
troubleshooting work.
•• The el
The electric
ectrical syste
al system has a mul
m has a multi-sta
ti-stage saf
ge safety sys
ety system to pro
tem to provide th
vide the highe
e highest
st
possible level of
possible level of safety
safety. Abnormal conditions are
. Abnormal conditions are detected and depending on
detected and depending on
the type of fault different measures are implemented. The least critical
the type of fault different measures are implemented. The least critical
condition only generates a warning via
condition only generates a warning via the display
the display. Faults that may
. Faults that may result in
result in
dangerous situations result in a stop
dangerous situations result in a stop and trouble shooting assistance via the
and trouble shooting assistance via the
error log.
error log.
•• The ba
The battery mu
ttery must alwa
st always be d
ys be discon
isconnecte
nected with all re
d with all replace
placement an
ment and repa
d repair work
ir work
on the electrical system.
on the electrical system.
•• It is esse
It is essential tha
ntial that all cab
t all cables (es
les (especi
pecially the b
ally the battery c
attery cable
ables) are co
s) are connect
nnected
ed
correctly as the electronics used in the truck are sensitive to incorrectly
correctly as the electronics used in the truck are sensitive to incorrectly
polarised supply voltage.
polarised supply voltage.
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